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Lasers
Beginning of paper
The laser is a device that a beam of light that is both scientifically
and practically of great use because it is coherent light. The beam is produced
by a process known as stimulated emission, and the word "laser" is an acronym
for the phrase "light amplification by stimulated emission of radiation."
Light is just like radio waves in the way t ....
Middle of paper
....de of the active medium
which consists of one that transmits some of the radiation that hits it. If the
active component in the laser is a gas laser than each atom is characterized by
a set of energy states, or energy levels, of which it may consist. An example
of the energy states could be pictured as a unevenly spaced ladder which the
higher ru.... |
| Word count: 757 |
Page count: 3 |
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